* {
    box-sizing: border-box;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    -webkit-user-select: auto;
    user-select: auto;
    scrollbar-width: none;
    -webkit-tap-highlight-color: transparent;
  }


  button, input, optgroup, select, textarea {
    font-family: inherit;
    font-size: 100%;
    line-height: 1.15;
    margin: 0;
}

ul {
    margin: 0;
    padding: 0;
}
a {
    text-decoration: none;
    cursor: pointer;
    color: #000;
}

ol, ul, li{
    list-style: none;
}

img {
    border: 0;
    vertical-align: middle; /*  去掉图片底部默认的3像素空白缝隙*/
}

button, input {
    overflow: visible;
}

button, input {
    -webkit-appearance: none;
    appearance: none;
    outline: none;
    border: none;
    background: none;
    padding: 0;
}

